Possibilistic logic is a quantitative method for uncertainty reasoning that is closely related to Zadeh's fuzzy set theory. In this paper, we formulate it as a kind of multimodal logic and develop… (More)

In this paper, we survey some quantitative and qualitative approaches to uncertainty management based on possibility theory and present a logical framework to integrate them. The semantics of the… (More)

What characterizes human reasoning is the ability of deal ing with incomplete information Incomplete logic is developed for modeling incomplete knowledge The most distinctive feature of incomplete… (More)

Quantitative modal logic (QML) is a multi-modal formulation of possibilistic reasoning with the capacity of representing and reasoning about higher order uncertainty. In this paper, some results… (More)